Equinox (March)
The March Equinox (http://en.wikipedia.org/wiki/Equinox) is one of two days in the calendar year when day and night hours are nearly equal; in the northern hemisphere, it is also the first day of Spring (Gregorian calendar). Annual seasons exist because of two planetary occurrences: 1) a 23.5° tilt of the earth's axis, which makes the earth […]

